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reorder and mergetime multiple netcdf from a directory

Added by Beata Szabo-Takacs over 4 years ago

Dear All,
I have several NetCDF files what I would like to merge with mergetime operator by cdo mergetime *.nc out.nc Before merging the files I should reorder their dimensions with ncpdq -a time,altitude,latitude,longitude file.nc file.nc Could someone suggest me a method for reordering multiple files in one way? Thank you for your help in advance!


Replies (3)

RE: reorder and mergetime multiple netcdf from a directory - Added by Karin Meier-Fleischer over 4 years ago

Hi Beata,

in one way? Use a shell script.

-Karin

RE: reorder and mergetime multiple netcdf from a directory - Added by Beata Szabo-Takacs over 4 years ago

Dear Karin, Thank you for your suggestion. I could write a bash shell script to combine nco ncpdq and cdo mergetime operators in one way. I have directories like 01, 02, 03 ...10, 11,...31 (days of a month). These directories contain 5 min resolution daily data what I would like to merge. My script can successfully combine these operators. The general description of the script is:

@ #!/bin/bash

dir=1
      while [ $dir -le 31 ]
       do
       D0="/path/to/0$dir" 
       D1="/path/to/$dir" 
if [ ! -d "$D0" ] && [ ! -d "$D1" ]; then
      dir=$dir
elif [ $dir -lt 10 ]; then
               for f in /path/to/0$dir/*
                 do
                 ncpdq -a time,altitude,latitude,longitude -O "$f" "$f" 
                 done
           cdo mergetime /path/to/0$dir/*.nc out_$dir.nc
     else
              for f in /path/to/$dir/*
                do
                 ncpdq -a time,altitude,latitude,longitude -O "$f" "$f" 
                 done
           cdo mergetime /path/to/$dir/*.nc out_$dir.nc
       fi
dir=$((dir+1))
 done

@

and I run it as
./myscript.sh 2> /dev/null
to supress the cdo messages.

I just shared it to help other users.

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